forked from xuos/xiuos
66 lines
1.4 KiB
ArmAsm
66 lines
1.4 KiB
ArmAsm
/* Copyright JS Foundation and other contributors, http://js.foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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.syntax unified
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.macro func _name
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.global \_name
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.type \_name, %function
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\_name:
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.endm
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.macro endfunc _name
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.size \_name, .-\_name
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.endm
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/**
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* setjmp (jmp_buf env)
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*
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* See also:
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* longjmp
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*
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* @return 0 - if returns from direct call,
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* nonzero - if returns after longjmp.
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*/
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func setjmp
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stmia r0!, {r4 - r11, lr}
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str sp, [r0], #4
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vstm r0, {s16 - s31}
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mov r0, #0
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bx lr
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endfunc setjmp
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/**
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* longjmp (jmp_buf env, int val)
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*
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* Note:
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* if val is not 0, then it would be returned from setjmp,
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* otherwise - 0 would be returned.
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*
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* See also:
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* setjmp
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*/
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func longjmp
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ldmia r0!, {r4 - r11, lr}
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ldr sp, [r0]
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add r0, r0, #4
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vldm r0, {s16 - s31}
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mov r0, r1
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cmp r0, #0
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bne 1f
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mov r0, #1
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1:
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bx lr
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endfunc longjmp
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